4-Channel Memphis MXA200.4S 4-Channel 4x50 Watts Peak Power at 4 Ohm $129.95$162.44 Memphis MXA300.4 300 Watts 4-Channel Marine Grade Amplifier w/ Sealed Connectors $299.95$374.94 Memphis SRX300.4 300W 4-Channel Street Reference SR Series Amplifier $239.95$299.94 Memphis MXA480.4M 480 Watts 4-Channel w/ Efficient Class D Design $499.95$624.94 Memphis MXA5.600 600 Watts 5-Channel w/ Elemental Resistant Conformal Coat Board $379.95$474.94 Memphis VIV400.4V2 400W 4-Channel VIV SixFive Series Amplifier $499.95$624.94 Memphis MXA600.4 600 Watts 4-Channel Marine Grade Amplifier w/ Compact Design $419.95$524.94 Memphis PRXA300.4 300W 4-Channel Power Reference PR Series Amplifier $369.95$462.44 Memphis VIV600.4V2 600W 4-Channel VIV SixFive Series Amplifier $749.95$937.44